2-[(4-Aminophenyl)sulfonyl]ethanol, hydrogen sulfate ester
A chemically defined aromatic organo-sulfur compound serving as a dye intermediate, featuring a sulfonyl group linked to both phenyl and ethanol moieties. Classified under HTS 2930.90.26.00 as explicitly named, fitting chapter 29 for separate organic compounds with sulfur directly bound to carbon. Used in textile dyeing processes requiring high purity.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported primarily as amine-function compound without emphasizing sulfur
Amine derivatives may classify under 2921 if sulfur not principal function per classification notes
If containing additional heteroatoms beyond S-C linkage
Organo-inorganic compounds with other nonmetals classify in 2935 if not purely organo-sulfur
If for reactive dyes produced from this intermediate
Chapter 29 excludes finished synthetic dyes, directing to heading 3204
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Import Tips & Compliance
• Include detailed spectral analysis (NMR/IR) in documentation to confirm structure; declare as hazardous if corrosive due to sulfate ester
• Avoid bulk mixtures that could trigger chapter 38 chemical preparations classification
• Register with TSCA for environmental compliance before import
Related Products under HTS 2930.90.26.00
3-(4'-Aminobenzamido)phenyl-β-hydroxy-ethylsulfone
This is a specific aromatic organo-sulfur compound used primarily as an intermediate in the production of reactive dyes for textiles. It features a sulfone group directly linked to carbon in an aromatic structure, qualifying it under HTS 2930.90.26.00 as one of the named substances in the tariff description. The compound's chemical purity must meet chapter 29 requirements for separate chemically defined organic compounds.
Diphenylthiourea
Diphenylthiourea is an aromatic thiourea derivative (C6H5-NH-CS-NH-C6H5) used as a vulcanization accelerator in rubber production and reagent in organic synthesis. It qualifies under HTS 2930.90.26.00 as a named organo-sulfur compound with thiocarbonyl group directly linked to carbon in aromatic structure. Meets chapter 29 criteria for chemically defined organic compounds.
N,N'-(Dithiodi-2,1-phenylene)bisbenzamide
This disulfide-linked bisbenzamide compound features two aromatic rings connected via S-S bond with amide functionalities, used in pharmaceutical intermediates and polymer chemistry. Explicitly named in HTS 2930.90.26.00 as aromatic organo-sulfur compound per chapter 29 definitions. The dithio structure provides characteristic sulfur-carbon linkages.
Pentachlorothiophenol
Pentachlorothiophenol (C6Cl5-SH) is a highly chlorinated aromatic thiol used as a synthetic intermediate for fungicides, lubricants, and rubber chemicals. Classified under HTS 2930.90.26.00 as named organo-sulfur compound with thiol group directly bound to aromatic carbon. Exclusively fits chapter 29 for pure chemical compounds.
4,4'-Thiodiphenol cyanate
Also known as 4,4'-thiodiphenol cyanate, this compound features a thioether linkage between two phenolic rings with cyanate groups, used in polymer synthesis and flame retardants. Named specifically in HTS 2930.90.26.00 as aromatic organo-sulfur compound per chapter 29 organo-sulfur definitions. The S-C aromatic bonds define its classification.
Diphenylthiourea Technical Grade
Technical grade diphenylthiourea with stabilizer for rubber accelerator applications, maintained as chemically defined compound under chapter 29 note (f). Explicitly named in HTS 2930.90.26.00, distinguishing from mixtures. Purity typically 95-98% for industrial use.